Glasses

ABSTRACT

What is described is a pair of eyeglasses with a bridge that connects the two glass lenses and with flat holders mounted on the lenses to support the side pieces, wherein the lenses are connected to the holders and to the bridge by means of a fixation device ( 1 ).  
     The invention is characterized by the fact that at least one fixation device ( 1 ) comprises a loop ( 2 ) that is inserted into an opening in the glass lens, the length of the loop being adaptable to various thicknesses of the glass.

TECHNICAL AREA

The invention relates to a pair of eyeglasses with a bridge thatconnects the two lenses and with flat holders attached to the lenses tosupport the side pieces (i.e., the arms or bows) of the frame, whereinthe lenses are connected to the holders and to the bridge by means of afixation device.

STATE OF THE ART

The lenses of eyeglasses and the various components of the frame inwhich they are mounted are ordinarily connected to one another by meansof screws, screw sleeves or threaded pins and nuts. So that thearrangement will not be twisted out of place, it is usually secured by afixation means passing through two bores, or by a pin-in-notch device,at the edge of the glass lenses. A commonly employed procedure is toinsert a U-shaped wire into slots in the glass.

The European application EP 0 561 763 A1 describes a lens-holdingportion of a frame for eyeglasses in which retaining pins supported on aframe part are disposed in pairs and each such pin engages a bore in theglass lens; in this case the retaining pins consist of the extendinglegs of a piece of wire bent into a U shape, which is attached to theframe part by way of the crosspiece that connects the two legs.

The European application EP 1 024 390 A1 describes a drilled frame thathas a bridge connecting the two lenses and also attachments, each ofwhich comprises a rodlike attachment element; in this design, each ofthe rodlike attachment elements includes a widened region and the lensescomprise correspondingly shaped, slitlike bores spaced apart from theedge of the glass, to expand the potential contact region and thusenable form-fitting engagement that generates no tension and is secureagainst rotation.

In most of the fixation devices known in the state of the art, anelaborate processing of the glass is required, part of which can beaccomplished only with special tools. Furthermore, it is often necessaryto handle loose parts, which must be supplied with various forms offixation devices so as to enable the eyeglasses frame to be fitted withlenses ranging from very thin to very thick.

DESCRIPTION OF THE INVENTION

It is the objective of the invention to avoid the disadvantages of thestate of the art as described above and to make available eyeglasseswith a fixation device that demands no special tool for glassprocessing, permits the dimensions to be extremely small, andnevertheless guarantees secure fixation of the lenses.

This objective is achieved in that at least one fixation device has theshape of a loop and is inserted into an opening in the glass, the lengthof the loop being adapted to accommodate lenses of various thickness.

The loop can be a wire, a bundle of fine wires or a bundle of fibres.

The opening in the glass comprises either one bore positioned near theedge or two bores of equal diameter.

The length of the loop is either continuously adjustable, or can beadapted stepwise to different thicknesses of glass.

To keep the loops in place, various methods are conceivable. Forinstance, the loops can be attached by means of a catch mechanism, byadhesive, by welding, by soldering or by a clamped or pinchedconnection.

If an adhesive is used to keep the loops in position, it can be ofseveral kinds: a radiation-activated adhesive, an adhesive based onepoxy resin, a fusion adhesive or a thermoplastic material.

When the loops are attached by welding, the procedure employed can be ofthe laser, ultrasound or microresistance type.

The invention will now be described with reference to the figures,wherein

FIG. 1 shows a type of loop fixation with a bore near the outer edge ofthe lens, and

FIG. 2 shows a type of loop fixation at the back side of the lens, withtwo bores.

The fixation device (1) consists of a kind of loop (2), which is passedthrough one bore near the edge of the glass lens (FIG. 1) or elsethrough two closely adjacent bores (FIG. 2) of the same diameter, isthen pulled tight and is removably or permanently connected tosupporting parts disposed at the edge of the lens, in the first case, orin front of or behind the glass in the second case.

The arrows in the drawings indicate attachment by one of the procedurescited above.

1. Eyeglasses with a bridge that connects the two glass lenses and withflat holders mounted on the lenses to support the side pieces, whereinthe lenses are connected to the holders and to the bridge by means of afixation device, wherein at least one fixation device comprises a loopthat is inserted into an opening in the glass, the length of the loopbeing adaptable to various thicknesses of the glass.
 2. Eyeglassesaccording to claim 1, wherein the loop is a wire, a bundle of fine wiresor a bundle of fibers.
 3. Eyeglasses according to claim 1, wherein theopening is a bore positioned near the edge.
 4. Eyeglasses according toclaim 1, wherein the opening consists of two bores of the same diameter.5. Eyeglasses according to claim 1, wherein the length of the loop iscontinuously adjusted to different thicknesses of the glass. 6.Eyeglasses according to claim 1, wherein the length of the loop can beadjusted in a stepwise manner to different thicknesses of the glass. 7.Eyeglasses according to claim 1, wherein the loops are attached by acatch mechanism.
 8. Eyeglasses according to claim 1, wherein the loopsare attached by adhesive.
 9. Eyeglasses according to claim 8, whereinthe adhesive is one that can be activated by radiation, or anepoxide-resin-based adhesive, or a fusion adhesive or a syntheticthermoplastic material.
 10. Eyeglasses according to claim 1, wherein theloops are attached by welding.
 11. Eyeglasses according to claim 10,wherein the welding procedure is a laser, ultrasound or microresistancewelding procedure.
 12. Eyeglasses according to claim 1, wherein theloops are attached by soft-soldering.
 13. Eyeglasses according to claim1, wherein the loops are attached by a clamped or crimped connection.14. Eyeglasses according to claim 2, wherein the opening is a borepositioned near the edge.
 15. Eyeglasses according to claim 2, whereinthe opening consists of two bores of the same diameter.
 16. Eyeglassesaccording to claim 2, wherein the length of the loop is continuouslyadjusted to different thicknesses of the glass.
 17. Eyeglasses accordingto claim 2, wherein the length of the loop can be adjusted in a stepwisemanner to different thicknesses of the glass.
 18. Eyeglasses accordingto claim 2, wherein the loops are attached by a catch mechanism. 19.Eyeglasses according to claim 2, wherein the loops are attached byadhesive.
 20. Eyeglasses according to claim 2, wherein the loops areattached by welding.